bug#52574: Cross-compiling glib failure

[Maxime Devos <maximedevos@telenet.be>]

L p R n d n schreef op vr 17-12-2021 om 12:51 [+0000]:
> 
> Hello guix,
> 
> Trying to cross-compile glib to aarch64with:
> 
> guix build --target=aarch64-linux-gnu glib
> 
> I get this error:
> 
> `Unbound variable: %outputs
> 
> I suppose the glib’s definition needs to be adapted to Guix’s new
> style
> which was merged a few days ago?
> 

Actually, glib's build system (meson-build-system) did not support
cross-compilation at all before the merge. Cross-compilation support
was added on that branch, but glib's package broke later, presumably in
<https://git.savannah.gnu.org/cgit/guix.git/commit/?id=f22f6fc3b6cc6382df3246d192a40a3951b48c37>.

The fix would be to replace to wrap the configure flags in a #~,
instead of a ´,replace (assoc-ref %outputs "bin") by #$output:bin and
adjust the configure flags of glib-with-documentation to use #~ and #$
instead of ´ and ,.

To avoid rebuilds, some
(if (%current-target-system) #~#$output:bin #~(assoc-ref %outputs
"bin"))
may be needed.

Greetings,
Maxime.